Last month, Tyler Heyworth, a 20-year-old white kid from Georgia, was on a cruise with his family, and he belted out a karaoke rendition of "Nobody," the 1996 slow-jam smash from R&B icon Keith Sweat.

Add Yahoo as a preferred source to see more of our stories on Google. Who can do it like Carnival Cruise Tyler? Nobody, apparently – at least nobody outside of Keith Sweat himself. The 20-year-old ...